Function EVP_KEM_encap_external_entropy_for_testing 

pub unsafe extern "C" fn EVP_KEM_encap_external_entropy_for_testing(
    kem: *const EVP_KEM,
    out_ciphertext: *mut u8,
    ciphertext_len: usize,
    out_secret: *mut u8,
    secret_len: usize,
    peer_key: *const EVP_PKEY,
    entropy: *const u8,
    entropy_len: usize,
) -> c_int